FR2492792A1 - SUPPLY SYSTEM FOR BULK PRODUCTS - Google Patents

Abstract

A. FEED SYSTEM FOR BULK PRODUCTS, WHICH MUST BE TRANSPORTED UPWARDS AND DELIVERED CONTINUOUSLY TO AN ELEVATED DELIVERY LOCATION, BUT WHICH MUST BE PICKED UP DISCONTINUOUSLY OVER TIME. B. SYSTEM CHARACTERIZED IN THAT A RETURN OF BULK PRODUCTS 5 LEADS EITHER TO A DISCHARGE CHAMBER 6 PLACED AT THE BOTTOM OF A SILO OF BULK PRODUCTS, OR TO AN AUXILIARY STORE, A SWITCH 3 DIRECTING THE BULK PRODUCT IN COMING FROM THE UPWARD TRANSPORT DEVICE 2 EITHER TOWARDS THE DELIVERY LOCATION 4, OR TOWARDS THE DISCHARGE CHAMBER 6 OR TOWARDS THE AUXILIARY STORE, TRANSFER LINKS 1, 8 BEING PROVIDED BETWEEN THE DISCHARGE CHAMBER 6 OR THE AUXILIARY STORE AND THE UPWARDS TRANSPORT DEVICE 2. C. THE INVENTION APPLIES IN PARTICULAR TO THE SUPPLY OF A FACILITY FOR PACKAGING BULK PRODUCTS.

Description

i -

  The invention relates to a food system

  for bulk products, which must be transported

  upwards and delivered continuously to a delivery location

  its elevated but which must be resumed discontinuously in time. Loading facilities for the product

  unpackaged bulk, weighing equipment and machinery

  packaging machines operating continuously, require in a

  a few seconds a continuous supply of bulk product. Stopping or interrupting a continuous supply

  in bulk product adversely affects significantly

  the mode of operation of such installations.

  A very large quantity of bulk products

  is usually stored in shops or

  los large capacity. If this bulk product is now transhipped, for example in vehicle tanks, two possibilities are available for this purpose in general. Or

  the entire capacity of the silo is at a sufficient level

  high enough for the vehicles to be loaded to be fed directly from the silo from top to bottom or for reasons of cost, the large silo is installed on the bare ground and a building is In general, a vertical conveyor is necessary to

  transport the product in bulk in a pre-store, through

  This product is then brought to the loading facility. In the same way it is also valid for a packaging installation in which the bulk products are packed in bags. Such systems are for example described in the publication "Zement, Kalk, Gips" n012 /

1970, page 553 and page 564.

  In these installations the pre-store guarantees

  that the bulk product is continuously fed to the device

  and that the flow of bulk product can be immediately

  stopped in case of interruption of operation. The times of

  tries to start the emptying of the transport silo

  vertical conveyor and intermediate transport routes for transport from the high-capacity silo to the intermediate warehouse are supported by a buffer volume which is taken into account in the pre-store capacity. In the case of this state of the art, a high capacity silo placed 2.-

  at a high level can be advantageous because an additional building

  of this type with the additional installations

necessary is very expensive.

  The object of the invention is to lower the amount of investment for such a building and for the technical installation, to simplify the maintenance of the different parts of machines and to reduce the energy expenditure for transport

  intermediate. This goal is achieved by renouncing Lm pre-

  store and that a return of bulk product leads to a room

  discharge located at the bottom of a silo of bulk products.

  With the removal of the pre-store, we obtain a significantly lower construction height and thus lower investment amounts for the building, In addition, the pre-store is no longer necessary. Thanks to the reduced transport height required for the vertical transport of the bulk product, energy costs are saved. The

  number of parts and access to

  in a smaller building, of course, simplify

  also the maintenance of the remaining installations.

  In a first aspect of the invention, the

  The store is replaced by a spill facility connected to a bulk product return resulting in a discharge chamber of a bulk product silo. An embodiment

  such a bulk product silo is described in the publica-

  According to another characteristic of the invention, it is possible, instead of a simple spill installation, also to install a switch on the transfer device.

  of the product in rac, this switch directing the current of pro

  from the transport device upwards both to the delivery location and to the discharge chamber. The continuous stream of bulk product is thus available at all times for the user. By simply switching the switch, it is oriented, either in

  the direction of the delivery location, either in the direc-

  return of the bulk product. We can also feed

  Several sampling stations, for example several packing stations, or several loading stations, which are fed separately or simultaneously. For this purpose, several points or several spill locations

are then necessary.

  According to another form of the invention, in the case where the upward conveying device for the bulk product is a bucket conveyor, it can be created between the supply silo discharge chamber and the feed inlet. bucket conveyor, a second transfer link

  placed below and which brings together the bottom of the silo at the foot of

  bucket carrier. Some level difference conditioned

  by the construction of a bucket conveyor, is presented

  be the entry of this carrier and the foot of this carrier.

  To neutralize this difference in level, the silo is installed at a high level, or the bucket conveyor is placed in a pit. According to this characteristic of

  the invention, the silo, like the bucket conveyor, can

  can be arranged on bare ground. Normally, the product in

  bulk then flows through the superior link

  re towards the bucket conveyor. For a residual dump of the silo, the lower link is used. This ends at the foot of the bucket conveyor. A minimum transitional efficiency conditioned by the emptying characteristics of a carrier

bucket can not be excluded.

  According to another aspect of the invention, a second

  possibility of achieving the goal laid down in the event that he does

  There is no silo available with a discharge chamber, or there is no comparable silo with similar characteristics, such as mixing chamber silos or homogenizing chamber silos. 'a

  return of bulk product results in an auxiliary store dis-

  placed next to the transport device upwards. In this case, you can also give up the pre-store. But the auxiliary store does not have the same characteristics as the discharge chamber of a silo. He may temporarily except the return

  bulk product. In the meantime, food

  in bulk from the capacity of the main silo, is

  cated. The feeding system then operates according to a cir-

  - cooked, namely that the bulk product is transported via the transport device upwards, the return of the bulk product and the auxiliary store. To maintain this circuit, a bulk product transfer link between the output of the auxiliary magazine and the vertical conveyor 4.- is necessary, of course the auxiliary magazine can

  also be arranged in such a way that its output is

  directly above the transfer link between the high capacity silo or feed silo and the upward conveyor so that this bulk feed transfer link is removed as an additional link .

  This second solution is also characterized

  through a referral on the provision of

  In the case of the wafer product transfer system, the flow of the bulk product is likely to be oriented either between the upward transport device and the delivery location, or between the upward transport device and the auxiliary store. In case the transport device to the

  top is a bucket conveyor, and where a conveyance link

  between the Auxiliary store and the entrance to the

  bucket carrier, a second link can be placed underneath between the bottom of the silo and the foot of the bucket conveyor9 so that both equipment can be installed

  on the same plane without pits and without supporting structures.

  To control the level in the tank

  xiliary filling indicators known per se are provided. Another advantage of the installations of this type is when a determined transport in return of the product

  in bulk, conditioned by the facilities becomes necessary.

  For example, in the case of packaging, account should be taken of

  Because of the breakage of bags, a certain amount of

  loosely packed bulk product, the transporters required for this purpose may be deleted as such bulk goods are delivered back to the transport device upwards.

installed anyway.

  The invention will be explained in more detail with reference to an exemplary embodiment shown in the accompanying drawings in which:

  FIG. 1 represents a feed system

  where the bulk product is taken from a discharge chamber of a high-capacity silo,

  FIG. 2 is a top street corresponding to

5.-

in figure 1.

  - Figure 3 shows a feeding system

with an auxiliary tank.

  FIG. 4 is a top view corresponding to

  In FIG. 1, the bulk product is transported via the bulk carrier 1p of the bucket conveyor 2, the switch 3, or in the direction of the conveyor. delivery location 4 or

  through the return 5 to the discharge chamber 6.

  The packaging machine 7 shown here by way of example,

  get the bulk product directly from the bucket conveyor

  through the switch 3 through the-

  this product reaches the delivery location 4. The

  probe detecting the filling of the packing machine

of the switch 3.

  If the operation of the packaging is stopped,

  the switch then directs the flow of the bulk product through the

  intermediate return 5 in the discharge chamber 6 of the silo.

  In the case of long-term shutdown, the exit of the silo is closed.

  the product in bulk from the whole

  bake transfer is emptied into the discharge chamber of the silo.

  With this system it is of course also

  It is possible to connect several silos with different types of

  bulk products, to a feeding system. The function

  of this system depends on a silo with a discharge chamber or a silo with similar possibilities, such as they can for example be considered in the case

  silos with mixing chamber and homogenisation chamber.

  Figure 2 shows for the sake of clarity, the

  top view corresponding to figure 1. The different di-

  transportations of the bulk product are indicated therein.

arrows.

  The second transport route for the

  of the feed silo through a conveyance

  bucket carrier is represented by the transport path 8 of the

bulk product.

  Figure 3 shows a power system in which the delivery location is also directly supplied, the excess however circulating through an auxiliary store. In the normal case, the bulk product

  flows from a large capacity silo through

  of the transfer path 9 to the bucket conveyor

  and through the switch 3 is in the location

  Delivery 4, or through the return of the

  3 in the auxiliary store 10. If this store

  xile has reached a certain level of filling, the food

  Bulk product from the high capacity silo is stopped and track 11 is opened. So, the circuit is at

new realized.

  In this example, a packing machine 7 is shown below the discharge location 4. As a result of an interruption of the operation of the package, a filling probe of the packing machine controls the switch 3. FIG. 4 is a view from above corresponding to FIG. 3. the directions of transport corresponding to the

  transport routes are indicated by arrows.

  In the case of these arrangements, it can be seen that the separation between the feed system and the high capacity silo or supply silo does not play any role. 6.- 7.-

Claims (8)

REVEND I C A T I 0 NS   1. Feeding system for bulk goods, which must be transported upwards and delivered continuously to an elevated delivery location, but which must be taken up discontinuously over time, characterized in that 'a return (5) of bulk products leads to a receptacle (6, 10).   2.- Feeding system according to the claim   1, characterized in that the receptacle is a chamber of   landfill (6) at the bottom of a silo of bulk goods.   3.- Feeding system according to the claim   2, characterized in that, by means of a spe-   In the bulk material transfer device (3), the bulk product stream can be oriented between the upward conveyor (2) and the delivery location (4) as well as between the conveyor device (2) and the delivery device (4). between the device   transport up (2) and the discharge chamber (6).   4.- Feeding system according to the claim   2, characterized in that the upward conveyor (2) is a bucket conveyor, while a transfer link (1) extends from the discharge chamber (6) to the bucket conveyor inlet. , and that a second transfer link (8) placed below goes from the bottom of the. silo at the foot of the carrier with buckets.   5.- Feeding system according to the claim   1, characterized in that the receptacle is a store auxiliary (10).   6.- Feeding system according to the claim   5, characterized in that a transfer link (11) of the   bulk product is placed between the intermediate magazine exit   diary and the vertical conveyor (2).   7.- Feeding system according to any one   as in claims 5 and 6, characterized in that   intermediate of a switch (3) on the transfer device   of the bulk product, the bulk product stream is likely to   to be oriented between the upward transfer device (2) and the delivery location (4) as well as between the   transport device (2) and the intermediate magazine diary (10).   8.- Feeding system according to any one 8.- 2492792   claims 5 to 7, characterized in that the device   The transport conveyor (2) is a bucket conveyor, while a transfer link goes from the intermediate magazine (10) to the bucket conveyor entrance and a second transfer link placed below from the bottom of the silo to the foot of the bucket conveyor.